水、盐水降温试验及分析计算  

Test of Reducing the Blasting Gas Temperature and Its Analytical Calculations under Different Mediums

作　　者：刘永胜[1] 杨小林[1] 谢华刚[1] 

机构地区：[1]河南理工大学土木建筑系,河南焦作454003

出　　处：《爆破》2005年第4期1-3,13,共4页Blasting

基　　金：河南省杰出青年科学基金(0312000500)

摘　　要：针对人们普遍认为的热容量大的介质其降温效果就好的观点,专门设计了水、盐水包裹炸药爆炸的试验和空爆的情况进行对比。通过爆温计算和实验结果分析得出:实际的爆炸降温效果不仅与介质的比热容有关还与其传热效果和摩尔质量有关。并且得出用盐水包裹炸药起爆能有效地降低爆生气体的最高温度(与空爆时相比降幅达70%),为高原冻土特种施工和隧道工作面降温问题提供参考。A blasting test with different mediums surrounding the dynamite is designed to testify that the higher the thermal capacity of the medium, the better effect of decreasing the blasting gas temperature. Through the test and the calculation of blasting temperature, we can make some decisions as follows： the effect of thermal transmission and molar mass also play important roles in the factual effect of decreasing blasting temperature, not the simple thermal capacity. In addition, the blasting temperature with salt water surrounding the dynamite is sharply decreased c^mpared with that with gas as the medium. This conclusion may be referred on the construction of frozen soil and reducing the temperature of working surface in the construction of tunnel.

关 键 词：爆生气体 爆温计算 降温效果 冻土施工 

分 类 号：TQ560.1[化学工程—炸药化工]